Patent US3485659A successfully refreshed from Google Patents.
US3485659A
Expired / Lapsed
US
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Impregnation process
Assignee: McGraw Edison Co
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Filing: 1966-09-29
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Granted: 1969-12-23
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Walter George Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:30
CPC Classifications
H; H01; H01B; H01B19/00; H01B17/00; H01B17/34; H01F; H01F27/00; H01F27/02; H01F27/04; B; B29; B29L; B29L2031/00; B29L2031/34; B29L2031/3412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |